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Finding the Fourth Proportional to 355,363.53, 490,400.49 and 194,218.53

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Solution

The fourth proportional to 355,363.53, 490,400.49 and 194,218.53 is: 268,020.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,363.53 : 490,400.49 = 194,218.53 : x
  2. Step 2: Convert to fraction form
    355,363.53/490,400.49 = 194,218.53/x
  3. Step 3: Cross multiply
    355,363.53x = 490,400.49 × 194,218.53
  4. Step 4: Simplify right side
    355,363.53x = 95,244,863,990.63
  5. Step 5: Solve for x
    x = 95,244,863,990.63/355,363.53
  6. Step 6: Final answer
    x = 268,020.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.